diff --git a/db.c b/db.c
index f44fa13..cbe8d5e 100644
--- a/db.c
+++ b/db.c
@@ -121,6 +121,21 @@ void sys_close(){
   Given a URL, return an idx of the interned URL. 
 
  ******************************************************************************/
+U32 URL_check(char* str){
+  U32 idx = string_hash(str);
+
+  // Linear-probe
+  char buf[256];
+  U32 off;
+  while((off=map[idx])){          // as long as a map exists for hash,
+    log_read(off,buf);           // look at what it refers to, and
+    if(!strcmp(str,buf))        // see if it is our needle.  If so,
+      return idx;              // we already have it, return it.
+    idx = (idx+1) & IDX_MASK; // otherwise, linear-probe next.
+  }
+  return 0;
+}
+
 U32 URL_idx(char* str){
   U32 idx = string_hash(str);
 
diff --git a/db.h b/db.h
index 32c2f6f..6a53506 100644
--- a/db.h
+++ b/db.h
@@ -3,4 +3,5 @@ void sys_close();
 void idx_sigil(U32 idx,char*sigil);
 U32 sigil_idx(char* sigil);
 U32 URL_idx(char* str);
+U32 URL_check(char* str);
 U32 idx_URL(U32 idx,char* buf);
diff --git a/gemtext.c b/gemtext.c
index 521e9d2..676147a 100644
--- a/gemtext.c
+++ b/gemtext.c
@@ -91,7 +91,8 @@ render_head - Render a header line, # ## or ###
  ******************************************************************************/
 void render_head(FILE* out, char*p){
   int level;
-  for(level=0;*p=='#';p++,level++);
+  char *q = p;
+  for(level=0;*q=='#';q++,level++);
   switch(level){
   case 1: fprintf(out,"\033[93m");break;
   case 2: fprintf(out,"\033[94;1m");break;
diff --git a/lookup.c b/lookup.c
index 7d058ad..85cdb23 100644
--- a/lookup.c
+++ b/lookup.c
@@ -5,28 +5,48 @@
 
 FILE* errlog;
 #undef ERRLOG
-int doit(char* req){
+int sigil(char* req){
 
   char buf[1024];
   U32 idx = sigil_idx(req);
   int ret =  idx_URL(idx,buf);
  if(ret) {
-
-    printf("[%s](@%X)%s\n",req,idx*4,buf);
+    printf("[%s](@%X) %s\n",req,idx*4,buf);
     return 0;
   } else {
     printf("Not Found\n");
     return 1;
   }
 }
-int main(int argc,char*argv[]){
-  if(strlen(argv[1])!=4) {
-    printf("Usage: lookup XXXX<enter>, where XXXX is a 4-char sigil\n");
+
+int url(char* url){
+  printf("[%s]\n",url);
+  U32 idx = URL_check(url);
+  if(idx){
+    char sigil[5];
+    idx_sigil(idx,sigil);
+    printf("%s\n",sigil);
+    return 0;
+  } else {
+    printf("Not Found\n");
     return 1;
   }
-    
+}
+
+  
+int main(int argc,char*argv[]){
+  if(argc>2) {
+    printf("Usage: lookup XXXX<enter>, where XXXX is a 4-char sigil\n");
+    printf("   or  lookup <url><enter>\n");
+    return 1;
+  }
+  int ret; 
   sys_open();
-  int ret = doit(argv[1]);
+  if(4==strlen(argv[1])) {
+    ret = sigil(argv[1]);
+  } else {
+    ret = url(argv[1]);
+  }
   sys_close();
   return ret;
 }